Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
mineral
Category
Sedimentary Or Igneous
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Quartz
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Dalmatian Jasper
Peralkaline Feldspar Rhyolite
igneous
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
igneous
Dalmatian Jasper
Peralkaline Quartz Feldspar Porphyry
igneous
Dalmatian Stone
Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock
igneous
Dalmatian Jasper
Dalmatian Stone (comprised of Feldspar, Quartz, and Arfvedsonite)
igneous
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Epidote-bearing Granite (Unakite-like)
Epidotized Granite
igneous
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Zoisite with Hornblende
Zoisite (Ca2Al3(SiO4)3(OH)) with Amphibole inclusions
metamorphic
Chalcedony (specifically Agate and Carnelian variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Chalcedony (Agate and Carnelian varieties)
Silicon Dioxide (SiO2)
mineral
Yellow Chalcedony
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Hematite
Hematite (Α-Fe2O3)
mineral
Potassium Feldspar and Quartz
KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Agate/Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite in Matrix (often with Chalcopyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Quartz Fragment
Silicon Dioxide (SiO2)
mineral
Calcite (Optical or Clear Calcite)
Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Educational Geologic Collection
Mixed Mineral and Rock Collection (Various compositions)
mineral
Granite or Granitic Gneiss
Granitoid / Gneiss
Igneous / Metamorphic
Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite in Matrix
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Pyrite (FeS2)
Mineral
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous